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Developer Tools · head to head

Restate vs Userpilot

Restate logo

Restate

Developer Tools

Durable execution engine in Rust with a free tier and low-latency workflows

From
Free
Free plan
Yes
Full reviewWebsite
Userpilot logo

Userpilot

Technology

Product analytics and in-app onboarding platform.

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: Restate the runtime is under a Business Source Licence rather than an open source licence, so building a competing managed offering on it is prohibited and some procurement functions will reject it on licence grounds alone.; Userpilot starter tier limited to 2,000 monthly active users; even small-to-medium products may require Growth tier
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Restate and Userpilot actually diverge.

Attributes where Restate and Userpilot differ
AttributeRestateUserpilot
Pricing modelPer month by durable action countsubscription
PlatformsLinux, macOS, WebWeb, iOS, Android, API
CategoryDeveloper ToolsTechnology

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Restate

  • Durable execution
  • Virtual objects
  • Single binary runtime
  • Multi-language SDKs
  • Workflows and sagas
  • Restate Cloud

Only in Userpilot

Nothing recorded that Restate does not also cover.

What people use each for

The jobs each tool is most often brought in to do.

Restate

  • Payment or order flows where a crash between two external API calls must not double-charge or lose the ordernot Userpilot
  • AI agent loops that call tools over minutes or hours and must survive a deployment mid-runnot Userpilot
  • Replacing hand-rolled retry, idempotency key and outbox code across a set of microservicesnot Userpilot
  • A small team that wants durable workflows without operating a Temporal cluster and its databasenot Userpilot

Userpilot

  • SaaS companies optimising user onboarding and activationnot Restate
  • Product teams collecting user feedback and identifying churn drivers via session replaynot Restate
  • Customer success teams using in-app guides and contextual helpnot Restate
  • Growth teams orchestrating multi-channel campaigns across email and in-appnot Restate
  • Product managers measuring adoption and engagement across user cohortsnot Restate

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Restate

  • The runtime is under a Business Source Licence rather than an open source licence, so building a competing managed offering on it is prohibited and some procurement functions will reject it on licence grounds alone.
  • Restate Cloud jumps from a free fifty thousand actions straight to 300 US dollars a month for twenty million, so a workload sitting at a few hundred thousand actions pays enterprise-shaped money for hobby-shaped volume.
  • It is a young project against Temporal’s established base, so hiring engineers who already know it is unrealistic and the answer to most questions is in the docs rather than on Stack Overflow.
  • The programming model requires structuring code around durable handlers and virtual objects, which is a genuine rewrite for existing services rather than a library you add.
  • The single-binary simplicity that makes small deployments cheap also means fewer operational knobs at very large scale than a system designed as separable components.

Userpilot

  • Starter tier limited to 2,000 monthly active users; even small-to-medium products may require Growth tier
  • Large price jump from Starter ($299/mo) to Growth ($849/mo), nearly 3x increase
  • Growth tier scales to 100,000 MAU but does not publish pricing for higher volumes, requiring Enterprise negotiation
  • Session replay and mobile engagement are optional add-ons in Growth tier, not included in base pricing
  • Enterprise pricing not published; custom negotiations required for large-scale deployments

Pricing, plan by plan

Restate

Free
  • FreeFree
    • Fifty thousand durable actions per month
    • No credit card required
    • Community support
  • Starter$300/month
    • Twenty million actions per month
    • Two hundred actions per second, bursting to one thousand
    • Twenty GB storage
  • Pro$1000/month
    • Fifty million actions per month
    • Five hundred actions per second, bursting to two thousand
    • Fifty GB storage
  • Enterprise$undefined/year
    • Negotiated volume
    • Twenty-four seven P0 support
    • 99.99 per cent SLA

Userpilot

Free
  • Starter$299/month
    • Up to 2,000 monthly active users
    • In-app engagement
    • User segmentation
  • Growth$849/month (marked 'Most Popular')
    • 2,000 to 100,000 monthly active users
    • All Starter features
    • Advanced product analytics
  • Enterprise$undefined/variable
    • Custom monthly active user levels
    • All Growth features
    • Premium integrations

Which should you pick?

Choose Restate if

  • You need durable execution.
  • You want to start without paying.
  • You work on Linux, macOS, Web.
  • You also want virtual objects.
Restate review

Choose Userpilot if

  • You want to start without paying.
  • You work on Web, iOS, Android, API.
Userpilot review

Questions people ask

Is Restate or Userpilot better?
Neither clearly leads. Restate starts at Free and Userpilot at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Restate or Userpilot?
Restate starts at Free and Userpilot at Free.
Does Restate or Userpilot run on more platforms?
Restate runs on Linux, macOS, Web. Userpilot runs on Web, iOS, Android, API.
Can I use Restate for free?
Both have a free tier, so you can try either at no cost before committing.
What is Restate best used for?
Restate is most often used for payment or order flows where a crash between two external api calls must not double-charge or lose the order, ai agent loops that call tools over minutes or hours and must survive a deployment mid-run, replacing hand-rolled retry, idempotency key and outbox code across a set of microservices, a small team that wants durable workflows without operating a temporal cluster and its database. Of those, payment or order flows where a crash between two external api calls must not double-charge or lose the order and ai agent loops that call tools over minutes or hours and must survive a deployment mid-run are not what Userpilot is typically brought in for.
What can Restate do that Userpilot cannot?
Restate covers Durable execution, Virtual objects, Single binary runtime, Multi-language SDKs.

Answered from the vendors’ own pages

Restate: Is Restate open source?

The SDKs are MIT. The runtime is under a Business Source Licence, which permits self-hosting but not offering it as a competing service.

Userpilot: What is included in the free trial?

Userpilot offers a free 14-day trial without requiring a credit card, providing full access to the Starter tier features.

Source
Restate: How does it compare with Temporal?

Same problem, different shape: one Rust binary with embedded storage instead of a server plus database plus workers, and lower per-step latency.

Userpilot: Does Userpilot include session replay?

Session replay is available in the Growth tier as an optional add-on for watching real user sessions and identifying friction points.

Source
Restate: Is there a free tier?

Yes, fifty thousand durable actions a month on Restate Cloud with no card required.

Userpilot: What integrations does Userpilot support?

Userpilot integrates with HubSpot, Salesforce, Segment, Google Analytics, Amplitude, Mixpanel, Heap, Zendesk, Intercom and Google Tag Manager. Additional integrations can be requested.

Source
Restate: Which languages are supported?

TypeScript, Java, Kotlin, Go, Python and Rust.

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